# concat

Joins several elements into one string.

Any data type can be used. Types other than string are converted to string before the function is applied.

Information noteNote: This function can be used both as an aggregation function or a string function, depending on the number of arguments.

## Arguments

At least two strings to concatenate, or an element containing an array or a group of elements to concatenate.

## Examples

| Expression | Result |
| --- | --- |
| concat("Hello ", "World!") | "Hello World!" |
| concat("Hello", null) | "Hello" |